5 Best Hammock Underquilts
There's nothing better than sleeping under open sky in a warm cocoon. Without an underquilt, your body heat escapes through the bottom of the hammock and you get cold‑butt syndrome fast.
Affiliate disclosure: As an Amazon Associate, we earn from qualifying purchases. It never affects which products we recommend.
Quick Picks
The 5 Best Hammock Underquilts (2025)
ENO Vulcan UnderQuilt
Best overall 3‑season (synthetic)
Two layers of PrimaLoft insulation and a water‑repellent shell keep wind and clammy nights at bay. Updated shock‑cord suspension dials in a snug seal on most gathered‑end hammocks.
Key Features
- PrimaLoft insulation
- Water-repellent shell
- Shock-cord suspension
- 3-season rating
Pros
- +Excellent warmth-to-weight ratio
- +Easy setup
- +Durable construction
Cons
- -Pricier than budget options
- -Synthetic fill packs larger than down
Outdoor Vitals Aerie
Most versatile (down, multi‑use)
Aerie is a convertible quilt that works as an underquilt, top quilt, pod, or sleeping bag. Pick a rating (0/15/30/45°F), enjoy real down loft, and compress it small. Great "one system" solution if you bounce between hammock and ground.
Key Features
- Down insulation
- 4-in-1 convertible design
- Multiple temperature ratings
- Ultralight
Pros
- +Incredible versatility
- +Down warmth and packability
- +Multiple temperature options
Cons
- -More expensive
- -Complex setup initially
- -Down requires care
OneTigris Night Protector
Best budget 3‑season
Durable 20D shell with synthetic fill, easy bungee suspension, and reliable coverage for most 10–11 ft hammocks (fits taller campers well). A proven starter underquilt that won't wreck your budget.
Key Features
- 20D ripstop shell
- Synthetic insulation
- Bungee suspension
- Budget-friendly
Pros
- +Excellent value
- +Simple setup
- +Good for beginners
Cons
- -Heavier than premium options
- -Less packable
- -Basic features
ENO Ember UnderQuilt
Best mild‑weather pick
Recycled synthetic insulation with offset quilting, aimed at cool shoulder‑season hangs and summer mountain nights. Pairs nicely with ENO DoubleNest/SingleNest; bring a top quilt for lower temps.
Key Features
- Recycled insulation
- Offset quilting
- Shoulder-season rating
- ENO compatibility
Pros
- +Eco-friendly materials
- +Perfect for mild weather
- +Great ENO integration
Cons
- -Limited to warmer conditions
- -Needs top quilt for cold
- -Less versatile
Onewind Full‑Length Underquilt
Great value coverage
Full‑length synthetic quilt with DuPont™ Sorona fill and a smooth 20D nylon shell. Good warmth‑to‑cost ratio and simple setup; an easy upgrade from pads in the hammock.
Key Features
- DuPont Sorona fill
- Full-length coverage
- 20D nylon shell
- Value pricing
Pros
- +Full body coverage
- +Good warmth-to-cost ratio
- +Easy setup
Cons
- -Heavier than 3/4 length
- -Basic suspension system
- -Limited color options
Buying Guide: How to Pick the Right Underquilt
Temp rating = comfort plan
Ratings are optimistic. For true comfort, pick an underquilt rated ~10°F lower than your expected low and add a top quilt/blanket.
Down vs. synthetic
Down is lighter and packs smaller; synthetics (e.g., PrimaLoft) handle moisture better and cost less.
Length
Full‑length is warmest/easiest. 3/4 length saves weight but usually needs a small sit‑pad under your calves/feet.
Fit & draft control
You want the quilt gently touching the hammock bottom with no gaps. Cinch the ends, use the secondary suspension (if included), and check for a consistent seal at shoulders/feet.
Setup Tips (Fast)
Hang your hammock first with a ~30° suspension angle, then attach the underquilt.
Adjust until it barely lifts the empty hammock. If it sags, you'll get cold spots.
Do a quick "hand‑under‑back" check while inside—if you feel cool air, tighten the ends.
Other Solid Options
Wise Owl Outfitters Underquilt (synthetic)
budget‑friendly and widely available
Kammok Firebelly 30 (top/under quilt capable)
versatile down trail quilt; use with a conversion kit or suspension for underquilt mode
Related Guides
Best Backpacking Hammocks
Complete guide to lightweight hammocks for wilderness camping
Best Hammock Straps
Tree-friendly suspension systems for secure hammock setup
Best Hammock Sleeping Pads
Alternative insulation options for hammock camping
How to Set Up a Hammock Tarp
Complete weather protection for your hammock setup
Have a favorite underquilt we should test? Tell us and we'll add it to the list.
Table of Contents
Ben Hammockin
Hammock Expert
Ben has been hammock camping for over 15 years and has tested hundreds of underquilts in conditions from desert nights to mountain winters. He's passionate about helping others stay warm and comfortable in their outdoor adventures.